<template>
  <div>
    <CrumBsofbread name1="用户管理" name2="用户列表" />
    <!-- 搜索 -->
    <el-card class="box-card">
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 表格 -->
      <el-table :data="userList" border stripe>
        <el-table-column label="序号" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页导航区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @click="editDialogClosed"
    >
      <el-form
        :model="editForm" 
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClosed"
      >
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import CrumBsofbread from "../CrumBsofbread.vue";
export default {
  components: {
    CrumBsofbread,
  },
  data() {
    //添加用户 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^\w+@\w+(\.\w+)+$/;
      if (regEmail.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的邮箱"));
    };
    //添加用户 验证手机号码的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/;
      if (regMobile.test(value)) {
        return cb();
      }
      //返回一个错误提示
      cb(new Error("请输入合法的手机号码"));
    };
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "", //查询参数
        pagenum: 1, //当前页码
        pagesize: 5, //每页显示条数
      },
      userList: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名称", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名在3~10个字符之间",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码在6~15个字符之间",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入电话", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      //控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      //修改用户的表单数据
      editForm: {
        username: "",
        email: "",
        mobile: "",
      },
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          {
            validator: checkEmail,
            message: "邮箱格式不正确，请重新输入",
            trigger: "blur",
          },
        ],
        mobile: [
          { required: true, message: "请输入手机号码", trigger: "blur" },
          {
            validator: checkMobile,
            message: "手机号码不正确，请重新输入",
            trigger: "blur",
          },
        ],
      },
      //控制分配对话框的显示与隐藏
      setRoleDialogVisible: false,
      //保存正在操作的那个用户信息
      userInfo: {},
      //保存所有的角色信息
      rolesList:[],
      //保存用户选中的角色id
      selectedRoleId:''
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    //获取用户列表数据
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败！");
      }
      this.userList = res.data.users;
      this.total = res.data.total;

      //this.$message.success('获取用户数据')
    },
    //监听每页显示条数事件
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    //监听页码事件
    handleCurrentChange(current) {
      this.queryInfo.pagenum = current;
      this.getUserList();
    },
    //监听状态开关
    async userStateChanged(row) {
      const { data: res } = await this.$http.put(
        `users/${row.id}/state/${row.mg_state}`
      );
      if (res.meta.status !== 200) {
        row.mg_state = !row.mg_state;
        return this.$message.error("修改状态失败！");
      }
      this.$message.success("更新状态成功");
    },
    //监听添加用户对话框关闭 清空数据
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    //点击按钮 添加新用户
    addUser() {
      //点击确定按钮，添加新用户
      //调用validate进行表单验证
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error("请填写完整用户信息! ");
        //发送请求完成添加用户的操作
        const { data: res } = await this.$http.post("users", this.addForm);
        //判断如果添加失败，就做提示
        if (res.meta.status !== 201) {
          return this.$message.error("添加用户失败! ");
        }
        //添加成功的提示
        this.$message.success("添加用户成功! ");
        this.addDialogVisible = false;
        //重新请求最新的数据
        this.getUserList();
      });
    },
    //编辑用户对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200)
        return this.$message.error("获取用户信息失败! ");
      //将获取到的数据保存到数据editForm中
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //关闭编辑用户对话框
    editDialogClosed() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户并提交
    editUser() {
      //用户点击修改表单中的确定按钮之后，验证表单数据
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return this.$message.error("请填写完整用户信息! ");
        //发送请求完成修改用户的操作
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          this.editForm
        );
        //判断如果修改失败，就做提示
        if (res.meta.status !== 200)
          return this.$message.error("修改用户失败! ");
        this.$message.success("修改用户成功");
        //关闭对话框
        this.editDialogVisible = false;
        //重新请求最新的数据
        this.getUserList();
      });
    },
    //删除用户
    async removeUserById(id) {
      //弹出确定取消框，是否删除用户
      const confirmResult = await this.$confirm(
        "请问是否要永久删除该用户",
        "删除提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      //如果用户点击确认，则confirmResult 为'confirm'
      //如果用户点击取消, 则confirmResult获取的就是catch的错误消息'cancel'
      if (confirmResult != "confirm") {
        return this.$message.info("已经取消删除");
      }
      //发送请求根据id完成删除操作
      const { data: res } = await this.$http.delete(`users/${id}`);
      if (res.meta.status !== 200) return this.$message.error("删除用户失败! ");
      this.$message.success("删除用户成功");
      //重新请求最新的数据
      this.getUserList();
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    //点击按钮 分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      //发送请求完成分配角色的操作
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`,
      {rid: this.selectedRoleId})
      if (res.meta.status !== 200) 
      return this.$message.error('分配角色失败！')
      this.$message.success('分配角色成功')
      //重新获取数据
      this.getUserList()
      //关闭对话框
      this.setRoleDialogVisible = false
    },
    //当关闭对话框的时候，重置下拉框中的内容
    setRoleDialogClosed() {
      this.userInfo = {}
      this.selectedRoleId = ''
    }
  },
};
</script>

<style>
</style>